One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,6,10)(3,5,9,7)(4,8,12,15)(11,13,16,14)(17,18,23,21)(19,26,24,20)(22,25,30,29)(27,32,31,28)(33,34)(35,36)(37,45)(38,40)(39,42)(41,48)(43,47)(44,46)(4,12)(8,15)(11,16)(13,14)(17,19)(18,20)(21,26)(22,27)(23,24)(25,28)(29,32)(30,31)(33,35)(34,38)(36,42)(37,46)(39,40)(41,44)(43,48)(45,47) involution — undirected(1,3)(2,7)(4,11)(5,10)(6,9)(8,14)(12,16)(13,15)(17,18,23,21)(19,20,24,26)(22,25,30,29)(27,28,31,32)(33,36,39,38)(34,40,42,35)(37,44,48,47)(41,46,45,43)(1,4,6,12)(2,8,10,15)(3,11,9,16)(5,13,7,14)(17,20,23,26)(18,24,21,19)(22,28,30,32)(25,31,29,27)(33,37)(34,41)(35,43)(36,44)(38,47)(39,48)(40,46)(42,45)(1,3)(2,5)(4,11)(6,9)(7,10)(8,13)(12,16)(14,15)(17,21,23,18)(19,26,24,20)(22,25,30,29)(27,28,31,32)(33,35)(34,36)(37,43)(38,42)(39,40)(41,44)(45,47)(46,48)(1,5)(2,9)(3,10)(4,13)(6,7)(8,16)(11,15)(12,14)(17,22)(18,25)(19,27)(20,28)(21,29)(23,30)(24,31)(26,32)(33,38,39,36)(34,40,42,35)(37,47,48,44)(41,46,45,43)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.