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