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