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