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