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