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