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