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