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