One vertex per element, one color per generator, with an edge from x to x·s.
(4,12)(8,15)(11,16)(13,14)(18,24)(19,20)(26,28)(27,30)(34,39)(36,44)(40,42)(43,45) involution — undirected(1,2,6,10)(3,5,9,7)(4,8,12,15)(11,13,16,14)(17,18)(19,25)(20,29)(21,26)(22,27)(23,24)(28,31)(30,32)(33,34)(35,40)(36,41)(37,42)(38,39)(43,47)(44,46)(45,48)(1,3)(2,7)(4,11)(5,10)(6,9)(8,14)(12,16)(13,15)(17,19,23,20)(18,25,24,29)(21,27,31,30)(22,28,32,26)(33,35,38,37)(34,40,39,42)(36,43,44,45)(41,47,46,48)(1,3)(2,5)(4,11)(6,9)(7,10)(8,13)(12,16)(14,15)(17,20,23,19)(18,25,24,29)(21,30,31,27)(22,28,32,26)(33,36)(34,41)(35,43)(37,45)(38,44)(39,46)(40,47)(42,48)(1,4,6,12)(2,8,10,15)(3,11,9,16)(5,13,7,14)(17,21,23,31)(18,26,24,28)(19,27,20,30)(22,29,32,25)(33,34)(35,40)(36,41)(37,42)(38,39)(43,47)(44,46)(45,48)(1,5)(2,9)(3,10)(4,13)(6,7)(8,16)(11,15)(12,14)(17,22)(18,27)(19,28)(20,26)(21,29)(23,32)(24,30)(25,31)(33,37,38,35)(34,42,39,40)(36,43,44,45)(41,47,46,48)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.