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