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