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