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