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