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