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