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