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