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